Non-contact power reception apparatus and jig for fabricating core for non-contact power reception apparatus

ABSTRACT

A non-contact power reception apparatus is provided, in which a power reception coil for a charging system and a loop antenna for an electronic settlement system are mounted on a battery pack and a cover case of a portable terminal such that the power reception coil is arranged in the center thereof and the loop antenna is disposed outside the power reception coil, so that a mode of receiving a wireless power signal and a mode of transmitting and receiving data are selectively performed, thereby preventing interference from harmonic components and enabling non-contact charging and electronic settlement using a single portable terminal. A jig for fabricating a core to be mounted to the non-contact power reception apparatus is provided.

TECHNICAL FIELD

The present invention relates to a non-contact power reception apparatusand a jig for fabricating a core for the non-contact power receptionapparatus, and more particularly to a non-contact power receptionapparatus, in which a power reception coil for a charging system and aloop antenna for an electronic settlement system are mounted on abattery pack and a cover case of a portable terminal such that the powerreception coil is arranged in the center thereof and the loop antenna isdisposed outside the power reception coil, so that a mode of receiving awireless power signal and a mode of transmitting and receiving data areselectively performed, thereby preventing interference from harmoniccomponents and enabling non-contact charging and electronic settlementusing a single portable terminal, and a jig for fabricating a core to bemounted to the non-contact power reception apparatus.

BACKGROUND ART

Generally, a battery pack is a kind of power supply that is charged withpower (electric energy) received from an external charger and suppliesthe power so that portable electronic devices, such as cellular phones,personal digital assistants (PDAs) and the like can be operated, andconsists of a battery cell which is charged with electric energy andcircuits for charging and discharging the battery cell (supplyingelectric energy to portable terminals).

The electrical connection between the battery pack, which is used in theportable terminals, and the charger for charging electric energy to thebattery pack may be achieved using a connector supply system, whichreceives the power from a regular power source and converts the voltageand current thereof to correspond to those of the battery pack, andsupplies the electric power to the battery pack via a connector of thecorresponding battery pack.

However, when the charger and the batteries are connected ordisconnected to replenish the electric power of the batteries using sucha connector supply system, there may be drawbacks, such as instantdischarge owing to the difference in potential between the chargerconnector and the battery connector, the risk of fire and concomitantdamage due to fire caused by the presence of foreign substances gatheredon both connectors, and the like.

Further, accumulated humidity will cause the discharge of the batterythrough the battery connector and other problems will occur, such as thereduction in the life and performance of the battery pack, and the like.

To solve the above-mentioned problems, a non-contact charging systemusing a wireless power transmission and reception system was recentlyproposed.

Meanwhile, portable terminals that have recently proliferated include anelectronic settlement system using a Local Area Network (LAN), so thatsettlement is carried out by bringing the portable terminals intoproximity with electronic settlement devices and conducting a settlementprocess.

Such an electronic settlement system essentially includes a loopantenna, an absorber, an impedance matching circuit and the like in theportable terminal.

In order to mount, in a single portable terminal, both the non-contactcharging system using the wireless power transmission and receptiontechnology and the settlement system using the LAN, a power receptioncoil of the charging system and the loop antenna of the electronicsettlement system should be mounted in the portable terminal andoperated.

However, due to interference from harmonic components (n times afundamental wave), which is produced in the frequency band (e.g. 13.56MHz) of the electronic settlement system and the frequency band (e.g.hundreds kHz) of the charging system, problems such as the unstabletransmission of signals occur, therefore failing to perform desiredfunctions.

The information disclosed in this Background of the Invention section isonly for the enhancement of understanding of the background of theinvention and should not be taken as an acknowledgment or any form ofsuggestion that this information forms the prior art that would alreadybe known to a person skilled in the art.

DISCLOSURE Technical Problem

To solve the above-mentioned problem, the present invention is directedto a non-contact power reception apparatus, in which a power receptioncoil for a charging system and a loop antenna for an electronicsettlement system are mounted on a battery pack and a cover case of aportable terminal while interference from harmonic components isprevented, thereby enabling non-contact charging and electronicsettlement using a single portable terminal.

Another object of the present invention is to provide a non-contactpower reception apparatus having the power reception coil arranged inthe center thereof and the loop antenna disposed outside the powerreception coil, so that a mode of receiving a wireless power signal anda mode of transmitting and receiving data are selectively performed.

A further object of the present invention is to provide a jig forfabricating a double-structure core which is mounted in the non-contactpower reception apparatus.

The information disclosed in this Background of the Invention section isonly for the enhancement of understanding of the background of theinvention and should not be taken as an acknowledgment or any form ofsuggestion that this information forms the prior art that would alreadybe known to a person skilled in the art.

Technical Solution

In accordance with an aspect of the present invention, the non-contactpower reception apparatus may include a common transmission andreception block selectively performing a mode of receiving a wirelesspower signal and a mode of transmitting and receiving data, arectification block rectifying the power signal received by the commontransmission and reception block in the mode of receiving the wirelesspower signal, a received-power control block controlling the powersignal rectified by the rectification block, a charging control blockcontrolling charging of a battery pack using electric energy of thepower signal controlled by the received-power control block, and a dataprocessing block transmitting and receiving data for electronicsettlement with an external electronic device via the commontransmission and reception block in the mode of transmitting andreceiving data.

The common transmission and reception block may include a powerreception coil receiving the wireless power signal, a loop antenna forthe transmission and reception of data, a mode switching unit selectingeither one of the power reception coil and the loop antenna and allowingelectrical connection to either one of the rectification block and thedata processing block, and a mode control unit detecting areceived-voltage of the power reception coil and controlling a switchingoperation of the mode switching unit.

The mode control unit may perform a control operation so that, if thedetected received-voltage is higher than a reference voltage, the modeswitching unit performs the switching operation to electrically connectthe power reception coil and the rectification block, and if thedetected received-voltage is lower than the reference voltage, the modeswitching unit performs the switching operation to electrically connectthe loop antenna and the data processing block.

The mode control unit may include a voltage detector for detecting thereceived-voltage of the power reception coil, comparing the detectedreceived-voltage with the reference voltage and outputting thecomparison result.

In accordance with another aspect of the present invention, thenon-contact power reception apparatus may include, in a portableterminal, a common transmission and reception block selectivelyperforming a mode of receiving a wireless power signal and a mode oftransmitting and receiving data, a rectification block rectifying thepower signal received by the common transmission and reception block inthe mode of receiving the wireless power signal, a received-powercontrol block controlling the power signal rectified by therectification block, a charging control block controlling charging of abattery pack using electric energy of the power signal controlled by thereceived-power control block, and a data processing block transmittingand receiving data for electronic settlement with an external electronicdevice via the common transmission and reception block in the mode oftransmitting and receiving data. The portable terminal may include aterminal body capable of performing wireless communication, arechargeable battery pack supplying electric energy to the terminalbody, a cover case for protection of the battery pack, and at least oneconnector module electrically connecting the respective terminal body,the battery pack and the cover case, in which a first connector moduleof the battery pack is connected with a second connector module of theterminal body, in which the common transmission and reception block isarranged in the battery pack in such a manner as to be connected withthe first connector module of the battery pack and a third connectormodule of the terminal body, in which the rectification block, thereception power control block and the charging block are sequentiallyarranged in the terminal body to extend from the third connector moduleto the second connector module, and in which the data processing blockis arranged between the third connector module and the received-powercontrol module.

In accordance with further another aspect of the present invention, thenon-contact power reception apparatus may include, in a portableterminal, a common transmission and reception block selectivelyperforming a mode of receiving a wireless power signal and a mode oftransmitting and receiving data, a rectification block rectifying thepower signal received by the common transmission and reception block inthe mode of receiving the wireless power signal, a received-powercontrol block controlling the power signal rectified by therectification block, a charging control block controlling charging of abattery pack using electric energy of the power signal controlled by thereceived-power control block, and a data processing block transmittingand receiving data for electronic settlement with an external electronicdevice via the common transmission and reception block in the mode oftransmitting and receiving data. The portable terminal may include aterminal body capable of performing wireless communication, arechargeable battery pack supplying electric energy to the terminalbody, a cover case for protection of the battery pack, and at least oneconnector module electrically connecting the terminal body, the batterypack and the cover case, in which a first connector module of thebattery pack is connected with a second connector module of the terminalbody, in which the common transmission and reception block is arrangedin the cover case in such a manner as to be connected with a fourthconnector module of the cover case, the fourth connector module beingconnected with a third connector of the terminal body, in which therectification block, the reception power control block and the chargingblock are sequentially arranged in the terminal body to extend from thethird connector module to a second connector module, and in which thedata processing block is arranged between the third connector module andthe received-power control module, the second connector module beingconnected with a first connector module of the battery pack.

A connector of the fourth connector module, which is connected with thecommon transmission and reception block arranged in the cover case, mayhave a shape of a leaf spring, and be electrically connected with aconnector of the first connector module of the battery pack via athrough-hole provided in a cover of the cover case.

The common transmission and reception block may include a powerreception coil receiving the wireless power signal, a loop antenna fortransmission and reception of data, a mode switching unit selecting anyone of the power reception coil and the loop antenna and allowingelectrical connection to any one of the rectification block and the dataprocessing block, and a mode control unit detecting a received-voltageof the power reception coil and controlling a switching operation of themode switching unit.

The mode control unit may perform a control operation so that if thedetected received-voltage is higher than a reference voltage, the modeswitching unit performs the switching operation to electrically connectthe power reception coil and the rectification block, and if thedetected received-voltage is lower than the reference voltage, the modeswitching unit performs the switching operation to electrically connectthe loop antenna and the data processing block.

The mode control unit may include a voltage detector for detecting thereceived-voltage of the power reception coil, comparing the detectedreceived-voltage with the reference voltage and outputting thecomparison result.

In accordance with still another aspect of the present invention, thejig for fabricating a core for a non-contact power reception apparatusmay include a lower planar disk having a center winding protrusionthereon, an upper planar disk placed on the lower disk and having atleast one slide hole therein, and at least one guide unit inserted intothe slide hole so as to be vertically movable.

The lower disk may have a through-hole adjacent to the windingprotrusion.

The guide unit may have a shape corresponding to a rectangular cornerand an inner curved section.

In accordance with yet another aspect of the present invention, themethod of fabricating a double-structure core using the jig for thenon-contact power reception apparatus may include steps of: a) insertinga coil wire into the through-hole of the lower disk from a lower sidethereof and drawing the coil wire upwards, b) winding the drawn coilwire about the winding protrusion to form a first coil, c) after thecompletion of formation of the first coil, sliding and lowering aplurality of guide units disposed in the upper disk, d) winding a coilwire around an outer surface of the guide unit to form a second coil,and e) separating the first and second coils from a jig for winding acoil.

The step b) includes b-1) winding the coil wire about the windingprotrusion to extend the diameter of the first coil, and b-2), if thediameter of the first coil matches that of an imaginary circle formed bythe curved surface of the guide unit, completing the formation of thefirst coil.

The step d) includes d-1) winding the coil wire extending from the firstcoil about an imaginary rectangle defined by the outer surface of theguide unit to form the second coil, and d-2), if the size of the secondcoil matches the size of the lower or upper disk, completing theformation of the second coil.

Advantageous Effects

According to the above-mentioned construction, the present invention hasthe following effects:

The power reception coil of the charging system and the loop antenna ofthe electronic settlement system are mounted in the battery pack and thecover case of the portable terminal, so that non-contact charging andelectronic settlement are both performed in the single portableterminal.

Particularly, the non-contact charging system and the electronicsettlement system, which use different respective frequency bands, areoperated at the same time and interference between the two systems isprevented, so that the reliability is improved.

The control modules of the non-contact charging system using thewireless power transmission and reception technology and the electronicsettlement system using LAN are arranged in diverse forms, so thatnon-contact charging and electronic settlement can be carried out forbattery packs having diverse structures.

In fabricating the core for the non-contact reception apparatus usingthe jig, the corresponding core is configured to have the shape of botha circle and a rectangle, so that the mobility and transmissionefficiency of the corresponding core (secondary side) can beadvantageously improved at the same time, by combining the advantages ofa circular coil and a rectangular coil.

Thus, adaptability to various kinds of portable terminals and the likecan be considerably improved.

The jig for winding a coil, which facilitates fabricating the core, andthe method of easily fabricating the core using the jig are furtherprovided, thereby having effects of improved productivity, reduced cost,increased production and the like in fabricating the double-structurecore.

Thus, the reliability of the non-contact charging system that includesthe non-contact power reception apparatus and the non-contact powertransmission apparatus can be improved, as can the competitiveness ofrelated products, such as portable terminals, battery packs, and thelike.

The methods and apparatuses of the present invention have other featuresand advantages which will be apparent from or are set forth in moredetail in the accompanying drawings, which are incorporated herein, andthe following Detailed Description of the Invention, which togetherserve to explain certain principles of the present invention.

The methods and apparatuses of the present invention have other featuresand advantages which will be apparent from or are set forth in moredetail in the accompanying drawings, which are incorporated herein, andthe following Detailed Description of the Invention, which togetherserve to explain certain principles of the present invention.

DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic circuit diagram of an exemplary non-contact powerreception apparatus in accordance with the present invention;

FIG. 2 is a schematic block diagram of another exemplary non-contactpower reception apparatus in accordance with the present invention;

FIG. 3 is a schematic circuit diagram of an exemplary commontransmission and reception block of FIG. 2;

FIG. 4 is a schematic circuit diagram of another exemplary non-contactpower reception apparatus in accordance with the present invention;

FIG. 5 is a schematic circuit diagram of another exemplary non-contactpower reception apparatus in accordance with the present invention;

FIG. 6 is an exploded perspective view of an exemplary battery pack forportable terminals in accordance with the present invention;

FIG. 7 is an exploded perspective view of an exemplary battery pack anda cover case for portable terminals;

FIG. 8 is a partially cut away perspective view of an exemplary jig forfabricating a core for the non-contact power reception apparatus inaccordance with the present invention;

FIG. 9 is an exploded perspective view of the jig of FIG. 8;

FIGS. 10 and 11 are perspective views illustrative of a procedure offabricating a double-structure core using the jig of FIG. 8;

FIG. 12 is a perspective view of the double-structure core fabricatedusing the jig of FIG. 8; and

FIG. 13 is a cross-sectional view illustrative of the procedure shown inFIGS. 10 and 11.

BEST MODE

Reference will now be made in detail to various embodiments of thepresent invention(s), examples of which are illustrated in theaccompanying drawings and described below. While the invention(s) willbe described in conjunction with exemplary embodiments, it will beunderstood that the present description is not intended to limit theinvention(s) to those exemplary embodiments. On the contrary, theinvention(s) is/are intended to cover not only the exemplaryembodiments, but also various alternatives, modifications, equivalentsand other embodiments, which may be included within the spirit and scopeof the invention as defined by the appended claims.

A non-contact power reception apparatus and a jig for fabricating a corefor the power reception apparatus according to the present invention arevariously applicable, and preferred embodiments thereof will now bedescribed in detail with reference to the accompanying drawings.

FIG. 1 is a schematic circuit diagram of an exemplary non-contact powertransmission system in accordance with the present invention, whichincludes a non-contact power transmission apparatus 100 for sending outa wireless power signal and a non-contact power reception apparatus 200receiving the wireless power signal and charging a battery cell with it.

The non-contact power transmission apparatus 100 includes a primary core110, an identifier 120, a wireless power transmission controller 130, aswitching controller 140, an operating driver 150, a series resonanceconverter 160, and a feedback circuit 170.

The primary core 110 consists of a plurality of power transmission cores111 and is connected in parallel with the series resonance converter160.

The identifier 120 detects a change in the load of the primary core 110and determines whether the change is induced by the non-contact powerreception apparatus 200 or not. Thus, the identifier serves both todetect the change in the load and to analyze and process a data signalcode of an AC signal of the signals transmitted from the non-contactpower reception apparatus 200.

The wireless power transmission controller 130 receives and checks thedetermination result from the identifier 120, and, if the change in theload is induced by the non-contact power reception apparatus 200, sendsout a power control signal to the operating driver 150 via the primarycore 110 to transmit the wireless power signal.

Then, the controller 130 analyzes and processes the data signal filteredby the identifier 120 and correspondingly controls the operating driver150. In addition, the controller creates a data signal (e.g. an IDasking signal) and transmits it to the non-contact power receptionapparatus 200 via the primary core 110.

The switching controller 140 controls the switching operation of aplurality of switches (not shown), which are provided between the seriesresonance circuit 160 and the power transmission cores 111.

The operating driver 150 controls the operation of the series resonanceconverter 160 depending upon the intensity of the wireless power signalthat is to be transmitted.

The series resonance converter 160 creates a transmission power sourcefor creating a wireless power signal to be transmitted under the controlof the operating driver 150, and supplies it to the primary core 110.

That is, when the wireless power transmission controller 130 transmits apower control signal for transmitting a wireless power signal, which hasa required power value, to the operating driver 150, the operatingdriver 150 controls the operation of the series resonance converter 160to correspond to the transmitted power control signal, and the seriesresonance converter 160 applies to the primary core 110 a transmissionpower source, which corresponds to the required power value, under thecontrol of the operating driver 150, thereby transmitting a wirelesspower signal having the required intensity.

When the primary core 110 receives the code data of an AC signal, thefeedback circuit 170 extracts the code data of the AC signal from a DCsignal applied to the primary core 110. The feedback circuit 170includes an RC filter circuit section (not shown), which is electricallyconnected with ends of the power transmission cores 111 of the primarycore 110 to remove a DC signal component (low frequency component), andan amplifying circuit section (not shown), which has an OP-AMP that iselectrically connected with the RC filter circuit section.

That is, the low frequency signal, which is a DC signal component, isremoved by the RC filter circuit section and the extracted AC signalcomponent is amplified by the amplifying circuit section.

Thus, it is possible to transmit and receive a low-amplitude signal.

The non-contact power reception apparatus 200 to be supplied with powerby receiving the wireless power signal includes a power reception coil211 of a secondary core 220, which creates induced power using thetransmitted wireless power signal, a rectifier 230, which rectifies theinduced power, and a battery cell module (not designated), which chargesa battery cell 270 with the rectified power.

This battery module includes a protection circuit, such as anovervoltage and overcurrent prevention circuit, a temperature detectingcircuit and the like, and a charging management module, which collectsand processes information such as the charged state of the battery celland the like.

The non-contact power reception apparatus 200 further includes awireless power receiver controller, which checks the current induced tothe power reception coil 211 of the secondary core 220 and requests thecontrol of the intensity of a wireless power signal based on theinformation on the charging of the battery cell, which is collected andprocessed by the battery cell module, and an ID transmitter, which, viathe secondary core 220, transmits and receives the code data of an ACsignal modulated in an AC modulation manner.

The non-contact power reception apparatus 200 further includes acapacitor C, which is connected in parallel with the power receptioncoil 211 of the secondary core 220 to remove a DC signal component, anda MOSFET, in which a drain terminal is serially connected with thecapacitor.

The MOSFET performs on/off control under the control of the IDtransmitter. The ID transmitter inputs the operation voltage of theMOSFET to the gate terminal of the MOSFET in correspondence with a dutyrate, which is set to correspond to the control request for theintensity of the wireless power signal by the wireless power receivercontroller.

That is, when the ID transmitter inputs an on-signal and an off-signal,which correspond to the operation voltage, to the gate terminal, theMOSFET creates and outputs a pulse width modulated (PWM) signalcorresponding to voltage input to the gate terminal, and the PWM signalis transmitted to the non-contact power transmission apparatus 100 viathe power reception core 211.

The non-contact power transmission apparatus 100 is supplied with powervia a power supply port 181 from an adapter supplied with a regularpower source, a power source of a USB port of a portable terminal suchas a notebook, or the like.

The apparatus 100 further includes a current detector 191, which detectsthe internal current of the apparatus 100, and a temperature detector192, which detects the internal temperature of the apparatus 100 duringthe charging process, so that if overheating, overvoltage or overcurrentoccurs, the operation can be stopped.

The battery cell module 230 of the non-contact power reception apparatus200 further includes a charging circuit 231 for charging a battery cell,a gauge circuit 232 for checking the charged quantity, and a chargingmonitoring circuit 233 for monitoring the charging state.

A display 193 is further provided to display the state of operation ofthe non-contact power transmission apparatus 100 and the charging stateof the non-contact power reception apparatus 200.

With regard to the fabrication of the power reception coil 211 of thesecondary side core 220 of the non-contact power reception apparatus200, a description thereof will be made later.

Hereinafter, reference will be made to the embodiment of the non-contactpower reception apparatus 200 that is provided with both a charging coiland a communication loop antenna at the same time.

FIG. 2 is a schematic block diagram of an exemplary non-contact powerreception apparatus illustrative of non-contact charging and a controlmodule of data communication in the portable terminals in accordancewith the present invention. The non-contact power reception apparatusincludes a common transmission and reception block 210; a rectificationblock 220, rectifying an AC wireless power signal and converting thesame to a DC wireless power signal; a received-power control block 230,controlling the DC signal converted by the rectification block 220 to beconverted into chargeable voltage and current (which can be used in thefollowing construction); a charging control block 240, supplying, to abattery cell block 270, electric energy output from the received-powercontrol block 230; a data processing block 250, analyzing and processingtransmitted/received data and performing an electronic settlementprocess; and the battery cell block 270.

Here, the battery cell block 270 consists of a rechargeable battery cell273, a temperature detecting module 272, and a charging monitoring block271 for protection.

The common transmission and reception block 210 serves to selectivelyperform a mode of receiving a wireless power signal to operate thenon-contact charging system and a mode of transmitting and receivingdata to operate the electronic settlement system, and includes a powerreception coil 211, a loop antenna 212, a mode switching unit 213, and amode control unit 214.

The power reception coil 211 serves to receive the wireless power signalfrom the non-contact charging system, and, as shown in FIG. 3, one endside thereof is connected, at a common contact point, with the loopantenna 212 and output outside the block and another end side thereof isconnected with the mode switching unit 213.

The loop antenna 212 serves to transmit and receive data, such asinformation on settlement by the electronic settlement system, and asshown in FIG. 3, one end side thereof is connected, at a common contactpoint, with the power reception coil 211 and output outside the block,and another end side thereof is connected with the mode switching unit213.

The mode switching unit 213 serves to select either one of the powerreception coil 211 and the loop antenna 212 and perform a switchingoperation to allow electrical connection to either one of therectification block 230 and the data processing block 250. In a state ofallowing the loop antenna 212 and the data processing block 250 to beconnected, the power reception coil 211 and the rectification block 230are operated to be connected under the control of the mode control unit214.

The mode control unit 214 serves to detect a voltage of the powerreceived by the power reception coil 211 and control the switchingoperation of the mode switching unit 213. Then, the mode control unitcompares the detected received-voltage with a reference voltage (aminimum voltage capable of determining a power signal supplied by anon-contact charging system), and outputs the comparison result to themode switching unit 213.

That is, after detecting a voltage received by the power reception coil211, the mode control unit 214 performs the control operation so that,if the detected received-voltage is higher than the reference voltage,the mode switching unit 213 performs the switching operation toelectrically connect the power reception coil 211 and the rectificationblock 220, and, if the detected received-voltage is lower than thereference voltage, the mode switching unit 213 performs the switchingoperation to electrically connect the loop antenna 212 and the dataprocessing block 250.

The mode control unit 214, as shown in FIG. 3, includes a voltagedetector 214 that is connected to a common contact point between thepower reception coil 211 and the loop antenna 212, so as to detect avoltage induced to the power reception coil 211.

As shown in FIGS. 4 and 5, reference will now be made to an example inwhich non-contact charging and the control module of data communicationin the portable terminals have been adapted according to the presentinvention.

FIG. 4 is a schematic circuit diagram of an exemplary non-contact powerreception apparatus in accordance with the present invention. Referringalso to FIG. 6, the apparatus is configured so that the commontransmission and reception module 210 is arranged in a battery pack Asuch that the module 210 is electrically connected with a firstconnector module 261 of the battery pack A, and the rectification block220, the received-power control block 230, the charging control block240, and the data processing block 250 are arranged in a terminal body Bof the portable terminal.

Here, the terminal body B is configured such that a second connectormodule 252, which is to be electrically connected with the chargingcontrol block 240, is provided so as to be connected with the firstconnector module 261 of the battery pack A, and such that a thirdconnector module 263 is provided so as to allow the wireless powersignal received by the power reception coil 211 to be supplied to therectification block 220.

The data that is transmitted/received via the loop antenna 212communicates with the data processing block 250 via the third connectormodule 263, and the data processing block 250 analyzes and processes thecommunicated data and performs a process such as settlement or the like.

Meanwhile, as shown in FIG. 6, the battery pack A is configured toinclude a battery cell 273, a temperature detecting module 272, and acharging monitoring module 271 in the battery pack A, which consists ofan upper case Aa and a lower case Ab.

The power reception coil 211 and the loop antenna 212 are mounted on oneside of the battery cell 273 such that a shield plate 211 a is disposedbetween the power reception coil 211 and the battery cell 273, and anabsorber 212 a is arranged between the loop antenna 212 and the batterycell 273.

That is, the power reception coil 211 and the loop antenna 212 areprovided on different pieces of shielding material on the same plane,thereby minimizing the thickness of the battery pack A.

Here, the power reception coil 211 has a structure in which a pluralityof windings is wound around it, and the loop antenna 212 has a loop typestructure, so that it is preferred that, as shown in FIG. 6, the powerreception coil 211 is provided in the center of the apparatus, and theloop antenna 212 is provided outside the power reception coil.

Thus, according to the arrangement shown in FIGS. 4 and 6, the powerreception coil 211, which receives a non-contact wireless power signaland charges a battery, and the loop antenna 212 for data communicationfor electronic settlement are arranged on the same plane, and the commontransmission and reception block 212, which includes the power receptioncoil 211 and the loop antenna 212, is mounted in the battery pack A, sothat the thickness of the battery pack A can be minimized, fabricatingcosts can be reduced, and the rectification module 220, thereceived-power control block 230, the charging control block 240, andthe data processing block 250 can also use modules mounted in theportable terminal body B.

The detailed electrical connection between the respective elements ofFIG. 6 or the like is modifiable into various forms by persons skilledin the art, so that it is not limited to the specific construction ofFIG. 7, which is to be described later.

FIG. 5 is a schematic circuit diagram of an exemplary non-contact powerreception apparatus in accordance with the present invention. Referringalso to FIG. 7, the apparatus is configured so that the commontransmission and reception module 210 is arranged in a cover case C suchthat the module 210 is electrically connected with a fourth connectormodule 264 of the cover case C, the fourth connector module 264 isconnected with a third connector module 263 of the terminal body B, andthe rectification block 220, the received-power control block 230, thecharging control block 240, and the data processing block 250 arearranged between the third connector module 263 and the second connectormodule 262 in the terminal body B.

The second connector module 262 of the terminal body B is connected withthe first connector module 261 of the battery pack A.

Meanwhile, the cover case C is configured so that, as shown in FIG. 7,space (not designated) for the common transmission and reception block210 is formed in the cover case C, and the power reception coil 211 andthe loop antenna 212 are mounted in the space such that a shield plate211 a is disposed on the power reception coil 211, and an absorber 212 ais arranged on the loop antenna 212.

Here, as shown in FIG. 7, preferably, the cover case includes the powerreception coil 211 in the center thereof and the loop antenna 212outside the power reception coil.

Thus, according to the arrangement shown in FIGS. 5 and 7, the powerreception coil 211, which receives a non-contact wireless power signaland charges a battery, and the loop antenna 212 for data communicationfor electronic settlement are arranged on the same plane, and the commontransmission and reception block 212, which includes the power receptioncoil 211 and the loop antenna 212, is mounted in the cover case C, sothat the thickness of the cover case C can be minimized, and therectification module 220, the received-power control block 230, thecharging control block 240, and the data processing block 250 aremounted in the terminal body B, so that traditional battery packs cancontinue to be used.

Meanwhile, in order to minimize the size of the non-contact powertransmission apparatus and the non-contact power reception apparatus,the power reception cores 211 according to the above embodiments arepreferably fabricated to be thin. Thus, a coil is used in which a coilwire, which comprises a plurality of thin metal wires, is wound arounditself in the winding diameter.

In non-contact charging, a shielding sheet is generally provided on oneside of a secondary coil in order to protect electric circuit elementsfrom electromagnetic waves.

Here, if the secondary coil is circular, there is no coil near the fourcorners of the rectangular shield sheet, so that an eddy current isgenerated, thus raising the temperature.

Due to the non-contact power transmission nature, the positions of theprimary core and the secondary core are variable, so that the mobilityand transmission efficiency for the secondary core become an importantevaluating reference for the reliability of products.

Generally, the coil may be shaped so that a transmitter and a receiverare circular windings, or otherwise so that the transmitter is circularwindings and the receiver is rectangular windings.

Here, if the coil of the receiver is circular, mobility is excellent,whereas power transmission efficiency suffers because area is decreasedcompared to the rectangular coil. If the coil is rectangular, relativeto the circular coil, power transmission efficiency is excellent, butmobility suffers.

According to the present invention, a jig is provided which facilitatesfabricating the secondary core for the non-contact reception apparatus,the secondary core is configured to have the shape of both a circle anda rectangle, so that the mobility and transmission efficiency for thesecondary core can be advantageously improved at the same time, bycombining the advantages of a circular coil and a rectangular coil.

FIG. 8 is a partially cut away perspective view of an exemplary jig forfabricating the non-contact power reception apparatus, showing adouble-structure core 320 wound around the coil-winding jig 310, thedouble-structure core consisting of circular and rectangular coreportions.

The coil-winding jig 310 includes a lower disk 311, an upper disk 312,and a guide unit 313 guiding the double-structure core 320 so that thecircular and rectangular core portions are separately wound around thecoil-winding jig 310.

The lower disk 311 is formed in a planar form as shown in FIG. 9, andhas a winding protrusion 311 a, about which the double-structure core iswound, in the center of the upper surface thereof.

Here, it is preferred that the height of the winding protrusion 311 a begreater than the height (diameter) of the coil wire.

A through-hole 311 b is formed adjacent to the winding protrusion 311 a,as shown in FIG. 3.

The through-hole 311 b passes through the lower disk 311, and is formedat an incline, preferably, as shown in FIG. 13. The inclinedthrough-hole 311 b prevents the coil wire from being drawn up towardsthe upper portion of the lower disk 311 when the double-structure core320 is wound.

The upper disk 312 is placed above the lower disk at a certain distancetherefrom, and is formed in a planar form, preferably like the lowerdisk 311, as shown in FIG. 9.

Here, various methods of separating and fixing the lower and upper disks311 and 312 can be adopted, without being limited to a specific one, asdesired by persons skilled in the art.

For example, a separate holder holds and fixes one side (opposite corneror the like) of the upper disk 312, so that the upper disk can beseparated from the lower disk 311.

The upper disk 312 has at least one slide hole 312 a, and preferably, atleast four slide holes.

The guide unit 313 is inserted into the slide hole 312 a in the upperdisk 312 so that the guide unit is movable in a vertical direction. Itis preferred that, as shown in FIG. 9, if the outer surface extends, animaginary rectangle is formed, and if the inner surface extends, animaginary circle is formed.

That is, the guide unit 313 has a shape corresponding to the corners ofa rectangle (preferably, a rectangular plane having a certain thickness)and an inner curved section 313 a corresponding to a circle.

Hereinafter, a method of fabricating a double-structure core 320 usingthe jig 310 for the non-contact power reception apparatus will bedescribed with reference to FIGS. 10 and 11.

Here, various kinds of separate devices for controlling the constructionof the present invention, such as a separator for separating the upperdisk 312, a winder for coiling wire, and the like, may be adopted,without being limited to a specific one, as desired by those skilled inthe art.

First, a coil wire (not designated) as a basic unit of thedouble-structure core 320 is inserted into the through-hole 311 b of thelower disk 311 from a lower side thereof and drawn upwards.

Here, as desired by a person skilled in the art, the coil wire may ofcourse be inserted into the through-hole from the upper side thereof anddrawn downwards.

The drawn coil wire is circularly wound about the winding protrusion 311a to form a first coil 321.

Here, in the case where the winding protrusion 311 a is provided to havethe same height as the thickness (height) of the coil wire and theundersurface of the upper disk 312 is separated by the height of thewinding protrusion 311 a, winding the coil wire is of course easilyperformed.

If the diameter of the first coil 321 increases to reach an imaginarycircular diameter by the inner curved section 313 a of the guide unit313 as the coil wire is wound, winding the coil wire stops and theformation of the first coil 321 is completed.

After the completion of the formation of the first coil 321, the guideunits 313 provided in the upper disk 321 are slid and lowered.

Here, it is preferred that the curved section 313 a of the guide unit313 come close to the outer circumference of the first coil 321.

When the lower surface of the guide unit 313 has come close to the uppersurface of the lower disk 312 through the above process, the coil wireis wound around the outer surface of the guide unit 313 to form a secondcoil 322.

Here, the coil wire for forming the second coil 322 may be differentfrom that for the first coil 321, but it is preferred that the coil wireforming the first coil 321 be continuously used while extending from thefirst coil.

If the second coil 322 formed by the coil wire corresponds to the area(size) of the lower or upper disk 311 or 312, as shown in FIG. 11, theformation of the second coil 322 is completed.

After the double-structure core 320 has been completely fabricatedthrough the above process, the double-structure core 320, consisting offirst and second coils 321 and 322, is removed from the coil-winding jig310.

Thus, the wireless power transmission double-structure core isfabricated such that the first circular coil 321 is provided in thecenter thereof and the second rectangular coil 322 is provided outsidethe first coil, so that the core with advantageous circular andrectangular coils have can be accomplished.

As set forth above, non-contact charging, the data communication controlmodule and its arrangement in the portable terminal have been describedabove. It is understood that the technical construction of the presentinvention may be modified to have different forms without departing fromthe spirit and essential features of the present invention by thoseskilled in the art.

Therefore, the above-mentioned embodiments are provided only forillustrative purposes in all aspects, and the invention is not limitedthereto. It should be understood that the scope of the present inventionis defined not by the above detailed description, but by the appendedclaims, and that the described embodiments and all variations ormodifications that can be deduced from equivalents interpreted from theclaims fall within the scope of the present invention.

The invention claimes is:
 1. A non-contact power reception apparatuscomprising: a common transmission and reception block selectivelyperforming a mode of receiving a wireless power signal and a mode oftransmitting and receiving a data; a rectification block rectifying thepower signal received by the common transmission and reception block inthe mode of receiving the wireless power signal; a received-powercontrol block controlling the power signal rectified by therectification block: a charging control block controlling charging of abattery pack using electric energy of the power signal controlled by thereceived-power control block; and a data processing block transmittingand receiving the data via the common transmission and reception blockin the mode of transmitting and receiving data, wherein the commontransmission and reception block includes: a power reception coilreceiving the wireless power signal; a loop antenna for the transmissionand reception of the data; a mode switching unit selecting either one ofthe power reception coil and the loop antenna and allowing electricalconnection to either one of the rectification block and the dataprocessing block; and a mode control unit detecting a received-voltageof the power reception coil and controlling a switching operation of themode switching unit.
 2. The non-contact power reception apparatusaccording to claim 1, wherein the mode control unit performs a controloperation so that, if the detected received-voltage is higher than areference voltage, the mode switching unit performs the switchingoperation to electrically connect the power reception coil and therectification block, and if the detected received-voltage is lower thanthe reference voltage, the mode switching unit performs the switchingoperation to electrically connect the loop antenna and the dataprocessing block.
 3. The non-contact power reception apparatus accordingto claim 2, wherein the mode control unit includes a voltage detectorfor detecting the received-voltage of the power reception coil,comparing the detected received-voltage with the reference voltage andoutputting the comparison result.
 4. The non-contact power receptionapparatus according to claim 1, wherein the data is the data forelectronic settlement with an external electronic device.